Abstract:
An infusion pump, including: a specially programmed microprocessor; a drip chamber for connection to a source of fluid and to an output tubing; a pumping section including a plurality of fingers and a first actuator, controllable using the microprocessor, for sequentially displacing the plurality of finger to compress a first portion of the output tubing to displace fluid from the drip chamber through the output tubing; an inlet valve disposed between the drip chamber and the pumping section and arranged to compress the output tubing to restrict or block flow through the output tubing; and a second actuator, controllable using the microprocessor, for opening or closing the inlet valve independent of the displacement of the plurality of fingers; or for operating the inlet valve to control a rate of flow of fluid from the drip chamber to the portion of the output tubing, such that the pump can be used in a pumping mode or a gravity infusion mode.
Abstract:
This invention discloses a peristaltic pump composed of a two-stage linear peristaltic pump mechanism, which engages in different functions, charging and pumping a fluid to a patient. This peristaltic pump is capable of restoring the crushed tubing, caused by repeated compression or crushing of the tubing by peristaltic fingers, to its original circular cross sectional area so that it can provide a precise flow rate. The two-stage linear peristaltic pump mechanism substantially improves the consistency of a flow rate over time and extends the usefulness of peristaltic pumps to applications where they could not otherwise be used.
Abstract:
The invention relates to a pump module, a base pump module and a pump system comprising a pump module and a base pump module. The pump module (1) according to the invention comprises a base part (2) and an elastically deformable membrane (4), the base part (2) and the membrane (4) forming a linear pump channel (5) which is curved in at least some sections. The base part (2) has a pump channel inlet (6) and a pump channel outlet (7), the pump channel inlet (6) and the pump channel outlet (7) being connected to the pump channel (5) for supplying a fluid to the pump channel (5) and leading it off therefrom such that a periodically circulating deformation of the membrane (4) allows a fluid to be pumped through the pump channel (5) from the pump channel inlet (6) to the pump channel outlet (7).
Abstract:
The present invention relates to a liquid infusion apparatus, comprising: a finger module arranged on a main body such that the finger module can elastically move backward from a liquid delivery tube; a tube clamp, in which two clamp bodies spaced apart from each other approach each other by means of the restoring force of an elastic member upon the opening of a door during infusion, so as to compress and block the liquid delivery tube; and a tube blockage detection device which detects whether the liquid delivery tube is blocked or expanded when the outlet side of the liquid delivery tube, which delivers a medicinal liquid pumped by a liquid pump during infusion, is accidentally bent.
Abstract:
The invention relates to the pulsation-free volumetric delivery of fluids and suspensions and is suited both for large laboratory applications, such as the recirculation of cell suspensions in closed fermenters, and for the pulsation-free and continuous delivery of very small quantities. It is the aim of the invention to enable completely pulsation-free volumetric delivery of fluids and suspensions using a simple technical solution. The aim is achieved according to the invention by a method and an apparatus. By way of pump chambers (9) to (13) consecutively arranged in the flow direction, wherein the center pump chamber (11) has a volume that is three times as large as that of any of the other pump chambers (9), (10), (12), (13), an intermediate storage of a partial quantity of the medium to be transported is achieved. By phase-shifted actuation (8) of the pump chambers (9) to (13), a defined volume is taken in at the inlet of the apparatus and a defined volume is put out at the outlet during each phase of the pump cycle.
Abstract:
Systems for circulation a fluid through a system and substituent component systems of the same. In one example, a pressure input system includes a bladder support, an expelling element, and a roll-up bladder configured to spool about the expelling element. The bladder support can rotate about an axis of rotation between at least a first configuration and a second configuration. The bladder support can include a first end and a second end opposite the first end. A distance between the first end and a ground surface when the bladder support is in the first configuration can be greater than a distance between the second end and the ground surface and a distance between the first end and the ground surface when the bladder support is in the second configuration can be less than a distance between the second end and the ground surface.
Abstract:
본 발명에 의한 투석액 펌프는, 내부에 수용 공간이 마련된 하우징, 적어도 일부가 수용 공간에 수용되는 투석액 공급 튜브 및 투석액 회수 튜브, 수용 공간에 회전 가능하게 설치되는 캠, 캠을 회전시키기 위한 모터, 캠에 의해 밀릴 수 있도록 수용 공간에 이동 가능하게 설치되는 제 1 역류 방지용 가압부재 및 제 2 역류 방지용 가압부재를 포함한다. 투석액 공급 튜브는 수축 및 이완할 수 있는 유연한 재질로 이루어지고 일단은 투석액 공급 탱크와 연결되며 타단은 혈액 투석 필터와 연결된다. 투석액 회수 튜브는 수축 및 이완할 수 있는 유연한 재질로 이루어지고 일단은 투석액 회수 탱크와 연결되며 타단은 혈액 투석 필터와 연결된다. 캠은 투석액 공급 튜브 및 투석액 회수 튜브를 가압하여 투석액 공급 튜브 및 투석액 회수 튜브 내부의 투석액을 토출시키기 위한 캠 면을 갖는다. 제 1 역류 방지용 가압부재 및 제 2 역류 방지용 가압부재는 투석액 공급 튜브 및 투석액 회수 튜브를 통한 투석액의 역류를 방지한다.
Abstract:
Die Erfindung bezieht sich auf ein Prozess-Analysegerät (10) zur Bestimmung eines Analyts in Wasser und weist ein Basismodul (14) und ein austauschbares Kartuschenmodul (12) auf. Das Basismodul (14) weist keine Fluidik auf, und weist insbesondere einen Pumpenantrieb (16, 16') und einen Analyt-Sensor (20) ohne Fluidik-Messstrecke (60) auf. Das Kartuschenmodul (12) weist die gesamte Fluidik auf, und weist insbesondere einen Flüssigkeits-Vorratstank (40, 41), eine antriebslose Pumpmimik (36, 36'), die die Flüssigkeit aus dem Vorratstank (40, 41) pumpt, und die Fluidik-Messstrecke (60) des Analyt-Sensors (20) auf. Bei in das Basismodul (14) eingesetztem Kartuschenmodul (12) wird die Pumpmimik (36, 36') durch den Antrieb (16, 16') angetrieben und ist die Fluidik-Messstrecke (60) mit dem Analyt-Sensor (20) funktional verbunden.